LinkedData vs Ontology

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What is the Semantic Web really all about?
The Semantic Web is based on the relatively straightforward idea that to be able to integrate (link) data on the Web we must have some mechanism for knowing what relationships hold among the data, and how that relates to some “real world” context.

The following is a lot of detail that comes from this simple idea. To answer this question properly, let me start back in the early Web era. While I’m going to do some potentially boring personal history, I’ll note the key ideas as I go along. Circa 1995, my research group began playing with an idea (first proposed by my then student Sean Luke now a faculty member at GMU) that if web markup (it was all HTML back then) contained some machine readable “hints” to the computer, then we could do a better job of Web tasks like search, query, and faceted browsing.

“Linked Data” (or “Web of Data”) – close to the original vision.
Design Issues. Up to Design Issues The Semantic Web isn't just about putting data on the web.

It is about making links, so that a person or machine can explore the web of data. With linked data, when you have some of it, you can find other, related, data. Like the web of hypertext, the web of data is constructed with documents on the web. However, unlike the web of hypertext, where links are relationships anchors in hypertext documents written in HTML, for data they links between arbitrary things described by RDF,. Use URIs as names for things Use HTTP URIs so that people can look up those names.

Simple. The four rules I'll refer to the steps above as rules, but they are expectations of behavior. The first rule, to identify things with URIs, is pretty much understood by most people doing semantic web technology.
La boîte à souvenirs. A l'image de Michel Rolland et de, certainement, beaucoup d'autres, je me suis posé des questions sur la survie de Flick'r au moment de l'offre de rachat de Yahoo !

At the end of a long day of meetings with various MIT tech masterminds, I made my way to the funny shaped building (see photo right-below) where the World Wide Web Consortium (W3C) and its director Tim Berners-Lee work. Berners-Lee is of course the man who invented the World Wide Web 20 years ago. This was my first meeting with the Web's creator, whose work and philosophy was a direct inspiration for me when I launched ReadWriteWeb back in 2003.1 After shaking hands, I told Tim Berners-Lee that this blog's name was in part inspired by the first browser, which he developed, called "WorldWideWeb".

That was a read/write browser; meaning you could not only browse and read content, but create and edit content too. Note: the interview will be published in two parts, with Part 1 today on the topic of Linked Data. UPDATE: Part 2 of this interview is now available.
Les ontologies c’est chouette. Web 3.0. Cette vidéo qui ne parlait pas, en fait, de web sémantique. Notre langue, c’est la traduction.